Oriental festival the beginning of November (7)
I believe the answer is:
eastern
'oriental' is the definition.
('eastern' can be a synonym of 'oriental')
'festival the beginning of november' is the wordplay.
'festival' becomes 'easter' (I've seen this before).
'the beginning of' indicates taking the first letters.
The initial letter of 'november' is 'n'.
'easter'+'n'='EASTERN'
(Other definitions for eastern that I've seen before include "in Beijing, possibly" , "Could be Chinese" , "from afar" , "Of the direction of the rising sun" , "Indian perhaps" .)